What makes Shen Zhou's Poet on a Mountaintop such an excellent example of literati painting during the Ming dynasty?

What will be an ideal response?

Essay responses should include these points:
Calligraphy, poetry, and painting are combined in literati painting.
The figure is a poet that has climbed a mountain and dominates the landscape, as a poem hangs in the air, like a projection of his thoughts.
The poem is a vehicle for self-expression.
It represents harmony of mind and landscape.